Gezgin Serap Yiğit, Baturay Şilan, Zafer Köylü M, Basyooni-M Kabatas Mohamed A, Kiliç Hamdi Şükür
Department of Physics, Faculty of Science, University of Selçuk 42031 Selcuklu Konya Turkey.
Department of Physics, Faculty of Science, Dicle University 21280 Diyarbakir Turkey.
Nanoscale Adv. 2025 Aug 26. doi: 10.1039/d5na00655d.
Thin films of CuSn Gd S were prepared on soda-lime glass substrates using spin coating in a sulfur-rich environment. We investigated how doping CuSnS with gadolinium (Gd) affected its structural, morphological, and optical properties using X-ray diffraction (XRD), Raman spectroscopy, field emission scanning electron microscopy (FE-SEM), and UV-Vis spectroscopy. XRD showed that all samples had a polycrystalline monoclinic structure, while FE-SEM revealed a mix of spherical and polygon-shaped grains. Optical analysis indicated an energy gap ranging from 2.10 to 1.50 eV, increasing with higher Gd content. The films exhibited increasing transmittance with longer wavelengths in the UV-Vis region. When tested for photocatalytic activity, the CuSn Gd S films effectively degraded methylene blue (MB) dye under visible light within 220 minutes. The CuSnGdS film showed the highest degradation efficiency (90.77%) with a rate constant () of 0.093 min. Adjusting the pH of the dye solution improved the performance, reaching 90.77% degradation efficiency at pH 10, compared to 41.25% and 61.94% at pH 4 and 7, respectively. Tests with scavengers EDTA-Na, IPA, and BQ resulted in degradation efficiencies of 61.78%, 78.24%, and 43.56%, respectively, highlighting that the highest efficiency (90.77%) occurred without scavengers. The results show promising potential for these films in treating pollutants in industrial and domestic wastewater systems.
在富硫环境中采用旋涂法在钠钙玻璃基板上制备了CuSnGdS薄膜。我们使用X射线衍射（XRD）、拉曼光谱、场发射扫描电子显微镜（FE-SEM）和紫外可见光谱研究了用钆（Gd）掺杂CuSnS如何影响其结构、形态和光学性质。XRD表明所有样品均具有多晶单斜结构，而FE-SEM显示出球形和多边形晶粒的混合。光学分析表明能隙范围为2.10至1.50eV，随着Gd含量的增加而增大。这些薄膜在紫外可见区域中随着波长的增加透射率也增加。当测试光催化活性时，CuSnGdS薄膜在可见光下220分钟内有效降解了亚甲基蓝（MB）染料。CuSnGdS薄膜显示出最高的降解效率（90.77%），速率常数（）为0.093min。调节染料溶液的pH值可提高性能，在pH值为10时降解效率达到90.77%，而在pH值为4和7时分别为41.25%和61.94%。用清除剂EDTA-Na、IPA和BQ进行的测试导致降解效率分别为61.78%、78.24%和43.56%，突出表明在没有清除剂的情况下效率最高（90.77%）。结果表明这些薄膜在处理工业和生活废水系统中的污染物方面具有广阔的应用前景。
